~Rabbi Aryeh Kaplan
The best-known form of meditation today is mantra meditation. The word "mantra" is an Eastern term denoting a word or phrase that is repeated over and over as a meditative exercise. In many types of Eastern meditation, mantra meditation is the central exercise, and it forms virtually the entire basis of Transcendental Meditation. Since there is no adequate generic Western term for this type of meditation, I shall use the Eastern term "mantra."
One immediate effect of mantra meditation is to relax the body. In this form of meditation, it seems that the more the body relaxes, the more active the mind becomes. It is as if energy is released by the body, which can be used by the mind. In any case, meditation, especially using a mantra, is an excellent relaxation method. For this reason, a number of psychologists have developed religiously neutral forms of mantra meditation to elicit the "relaxation response." An entire system called Standardized Clinical Meditation (SCM) has been developed to utilize this form of meditation in a clinical context.
Mantra meditation most probably works largely through habituation. If a person is in a room all day with, say, a loudly ticking clock, his mind eventually turns off the sound of the ticking. Although he hears the ticking, it simply does not register. The person is said to have become habituated to the ticking sound, so that he no longer pays attention to it. This is an important mechanism through which the mind filters out the commonplace and allows the thinker to concentrate on what is important. When one repeats a mantra over and over, the mind also becomes habituated to it. Eventually, one becomes able to say it without the words registering in the conscious mind. By this time, one has also formed the habit of erasing all thought from the mind while reciting the mantra. It is therefore a highly effective psychological means of removing all thought from the mind. This may seem quite mundane and nonmystical. However, the mantra does not necessarily have to be the mystical element in the meditation. The mantra can serve as a means of clearing the mind of mundane thought, leaving it open to other, transcendental experiences. This can be true no matter how nonmystical the mantra is. Indeed, in certain types of clinical meditation, a nonsense word can be used as the mantra.
Nevertheless, if the mantra has spiritual power in its own right, it not only clears the mind of mundane thought, but also puts the meditator into a special spiritual space. The form of the mantra can be extremely important if one wishes to accomplish a specific spiritual goal in one's meditation. Although mantra meditation is not the most typical Jewish form of meditation, it is one of the simplest. As in general meditation, it consists in repeating a word or a phrase over and over, usually for a period of half an hour each day. The most important element of the meditation is that it be done daily and that there be a commitment to continue the practice for a period of at least a month. It usually takes between thirty and forty days for the results of this type of meditation to become manifest.